Question about JVC HD-52Z575 52" HDTV

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My Crown CTT3207W 32 in. LCD TV stays on for about 10 secs then shuts off

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  • JVC Master
  • 5,568 Answers

If there is no audio or video, it is probably a failing main power supply.
Try the instructions pasted below:
If it's failing to turn on or stay on reliably, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself.
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core (no laminations as with a line-frequency part) transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.

Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.

If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself but it will likely have the same problem eventually unless they have altered the design.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.

Posted on Sep 08, 2009

  • clint May 28, 2011

    Go here for the repair kit which is easy to do.If you can solder then youre okay and the powerboard is easy to remove and does not need genius just a+b+c or 1,2,3. If you know them that all it takes.
    http://www.chsinteractive.co.uk/electric...

  • Steve Allison
    Steve Allison May 28, 2011

    An excellent tip but it should be made clear that a decent soldering iron is required and some practice on the guts of your old 8-track player is advised.

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